eosello



(No Model) J ROSELLO 2 Sheets-Shegt 1. A v V STEAM BOILER.

No. 304,133.v Patented Au .26,1884.

WITNESSES UVENTOR (No Model.) 2 Sheets-Sheet 2.

J. ROSELLO.

STEAM BOILER.

No. 304,133. Paented Aug. 26. 1884.

WITNESSES:

ATTORNEYS.

llnrreo Srarns Josn ROSELLO, or HAVANA, CUBA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 304,133, dated August 1834- Appiicntion filed June 17, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that 1, Josh. ROSELLO, of Havana, Ouba,have invented anew and Improved StcanrBoiler, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved steam-boiler, which is so constructed that it can be cleaned very readily, and scale and other deposits removed from the water-tubes and the inner surface of the sides of the boiler, whereby explosions of the boiler are to a great extent avoided.

The invention consists in various parts and details, and combinations of the same, as will be fully set forth and described hereinafter, and claimed.

tcference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal sectional elevation of my improved steam-boiler. Fig. 2 is a sectional plan view of the same on the line it a", Fig. 1. Fig. 3 is a sectional plan view of the same on the line 1 3 Fig. 1.

The boiler is constructed with a cylindrical inner shell, A, in which the fire-box is located.

At its top the said shell is provided with an outwardly-proj ecting annular flange, A, from the edge of which aplate, B, projects upward, to the upper edge of which plate the dome O is riveted. A plate, D, surrounding the lower third of the cylindrical part A, has its bottom edge securely united with the bottom edge of the cylindrical part A byhcavy rivets or bolts passed through the said parts A and D, and through blocks D, interposed between them. A horizontal annular part or plate, E, is riveted to the upper edge of the upright part D, and projects horizontally from the same.

The cylinder F, forming the outside shell of the boiler, is provided in its top with a cap, G, to the middle of the upper surface of which a strong hook, H, is secured. A safety-valve, I, is arranged on the top of the cap or hood G, and the pipes for connecting the boiler with the engine are held in the said cap or hood. The outer cylinder, F, is provided at its bottom with an outwardly-projecting annular flange, J, the outer edge of which is flush with the outer edge of the circular plate E. Kneebraccs K have their lower ends riveted 0r bolted to the outer surface of the upright part D at the bottom, and the upper ends of the said knee-bolts or braces are passed through the horizontallyprojecting annular part E, and through the flanges J of the cylindrical part F, and nuts are screwed on the upper ends of the said bolts. Smoke pipes or lines in one or more circular rows extend from the flange A at the top of the cylindrical shell A down to the annularhorizontally-projccting partE,thusforming a passage for the products of combustion from the upper part of the fire-place through the water in the boiler to the space between the outer shell, F, of the boiler and the casing M, which surrounds the boiler, and forms the flue for the circulation of the products of combustion before the same pass into thesmoke-stack N, with which the said casing M is connected. The casing M is provided at its top with a neck, 0, in which the outer shell, F, of the boiler fits very closely, the rivets uniting the hood or cap G of the boiler with the outer shell, F, being countersunk, so that the outer surface of the shell F will be perfectly smooth, and will slide through the neck 0 without being obstructed.

The fire-door channel I? of the boiler is arranged below the horizontally-projecting part E of the outer shell. The pipe Q, for conducting steam to the engine, extends from the top of the boiler and down between the inner shell, A, and the outer shell, F, to the horizontal part E, through the same and out through the side of the casing.

In the top of the dome C of the inner shell a fusible plug, R, is held to close an opening in the said dome. Vv'hen the level of the water sinks below the said plug, the heat fuses the plug and permits the steam to enter the fire-place and to extinguish the fire, thereby preventing an explosion in case the water sinks below the low-water mark.

In the bottom of the smoke-stack N a cylindrical feed-water heater, S, is arranged, the top of which is connected by a pipe, S, with the bottom of the boiler. The bottom of the feed-water heater is connected by a pipe, S", with the water-supply reservoir. A pipe, T, extends vertically through the feed-water heater S, and is provided in its top with a nozzle, T, projecting into the smoke-stack. The exhaust-steam passing up through the pipe T heats the same and the feed-water surrounding it, and the steam passing through the nozzle T into the smoke-stack creates a draftin the same.

If the boiler is to be cleaned, the nuts are unscrewed from the upper ends of the knee bolts or braces K, and the outer shell, F, and its cap or hood G are raised by means of suitable hoisting gear or tackle connected with the hook H on the top of the said cap or hood. The scale and other deposits can then be removed from the inner surface of the outer shell and from the outer surface of the inner shell, from the outer surface of the fines L, from the top of the projection. E, the top of the dome 0, ice, and all deposits, scale, incrustations, &c., that may have formed on the walls of the boiler can be removed and the boiler cleaned thoroughly. The attendant can reach down between the upright pa-rt D and the outer surface of the cylinder A and remove the scale from the side of the same. The mud collecting on thebottom of the pocket formed between the upright part D and the cylindrical shell A can easily be washed out. If the boiler is to be used again, the outer shell, F, is lowered down upon the horizontally-projecting part- E, and is held in place securely by drawing up the nutsutightly, which are screwed on the upper ends of the knee bolts or braces K. As the smoke and products of combustion are compelled to rise in the fireplace formed in the cylinder A. and then pass down through the lines L, which are surrounded by water, and then circulate on the outside'of the outer shell, F, all the heat is utilized and none lost or wasted.

The nuts on the upper ends of the braces K are covered by an annular cap, J

The top or cap G of the boiler and the dome C are connected by a series of staves or braces, provided at their ends with eyes, through which bolts are passed, which are also passed through apertured lugs on the under side of the top or cap G,and on the upper side of the dome C. If the upper partof the boiler is to be removed, the bolts holding thc'braces "W are withdrawn by a person who passes his hand through the armhole w provided in the outer shell, F, of the boiler, as shown in Fig.1.

Having thus described my iuvention,whatl claim as new, and desire to secure by Letters Patent, is-

1. A steanrboiler consisting, essentially, of the main shell A, horizontal part A, cap 0,

plate B, connecting cap 0 with the horizontal part A, outcrlower section, D, horizontal part E, and upper section, F, tubes L. passing through plates A and E, cap G, secured to section F, and removably connected with the cap C, and a shell with a smoke exit communicating with the lower ends of the tubes L, substantially as set fort-h.

' 2. In a steanrboiler, the combination, with the inner shell, A, of the upright bottom part, D, of the outer shell, the horizontally-projecting part E at the top of the part D, the outer shell, F, having a cap or hood, G, and the knee bolts or braces K, projecting from the bottom of the part D upward and through the outer edge of the part E,an d through the flange of the part F, substantially as herein shown and described.

3. The com bination, with asteam-boilerhaving its outer shell formed of a fixed section anda vertically-reinovable section, of a casing surrounding the outer shell, and provided with an opening in which the said shell can fit closely,substantially as herein shown and dcscrihed.

JOSE ROSELLO.

Witnesses:

Fnlm'cisco Armor, Anronso Pu Lil 

